HomeInterview QuestionsDid you use the auto loader option in Databricks?

Did you use the auto loader option in Databricks?

🟢 Easy Behavioral Junior level
1Times asked
Jun 2026Last seen
Jun 2026First seen

💡 Model Answer

Yes, I used Auto Loader in Databricks for streaming ingestion of JSON and Parquet files from an S3 bucket. Auto Loader automatically detects new files, uses a metadata log to avoid reprocessing, and supports schema inference and evolution. I configured it with a checkpoint location in ADLS, set the trigger to micro‑batch, and added a simple transformation to filter out invalid records. This setup reduced the ingestion latency to a few seconds and eliminated the need for a separate file watcher.

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